After nearly 30 years of development, aluminum alloy doors and windows have gradually replaced plastic steel doors and windows, becoming the leading product of doors and windows. It is still far-fetched to say that aluminum alloy doors and windows are "high-end products". Because of its strong metal characteristics, there is still a big gap between the high-end furniture and the high-end furniture products. Coupled with the humanity's preference for “woodâ€, aluminum-wood composite doors and windows have gradually become the new favorite of the high-end door and window market. Nowadays, aluminum-wood composite doors and windows can be seen in villas, hotels, high-end clubs and other occasions. So, how to buy high-end aluminum alloy doors and windows?
First, the surface quality of the product affects the appearance
The quality of the door and window surface quality will directly affect the overall installation effect afterwards, so you should pay attention to the quality of the door and window surface from the following aspects when purchasing:
1. There should be no obvious damage to the decorative surface of the door and window. The protective film on the surface of the door and window should not have scratches and scratches.
2. There should be no obvious chromatic aberration on the colored surface of adjacent components on the door and window.
3. There should be no aluminum chips, burrs, oil spots or other stains on the surface of the doors and windows; there should be no spilled adhesive at the joints; there should be no excessive nail holes exposed, which will affect the appearance. In this regard, Li Dong also made a simple analysis of the company's door and window products. The color of the door and window is made of rosewood and local gold, bright and bright, giving people a fresh and elegant feeling. The main raw materials of the products are imported materials and the formula is exquisite. With imported extruders and molds, the profiles produced are fine, uniform and have a high finish.
Second, the product size deviation is as small as possible
Aluminum alloy door and window products will have a qualified range of dimensional deviation, with the smallest dimensional deviation. If it is out of range, it is a non-qualified product. For example, there is a standard stipulation that the width and height of the slot of the door and window frame should be ≤2000mm, and the allowable deviation range is ±1.0mm; the verticality of the front and the side of the door and window frame (including the splicing material) is ≤2000mm, and the deviation is allowed. The range is ≤ 2.0mm, and so on.
Third, the material needs to meet the requirements of 5 aspects
There are five main requirements for aluminum alloy door and window products in material materials:
1. Thickness: There are 75 series, 88 series, 103 series and 120 series of aluminum alloy sliding doors. (The number of series indicates the number of millimeters of the thickness of the door frame.) The aluminum alloy sliding door inside the house can be used with the 88 series. The aluminum alloy sliding window has several types, such as 50 series, 55 series, 70 series, 76 series, 118 series, 130 series, etc., which should be determined according to the size of the window hole and the local wind pressure value. Among them, the aluminum alloy sliding window used as the closed balcony should be no less than the 55 series.
2. Strength: The tensile strength should be 157 Newtons per square meter and the yield strength should be 108 Newtons per square millimeter. When you purchase, you can use your hand to bend the profile moderately, and you can restore it after you release it.
3. Flatness: When inspecting the surface of aluminum alloy profiles, there should be no depression or bulging.
4. Gloss: Aluminum alloy doors and windows avoid the appearance of open air bubbles (white spots) and ash (black spots), as well as cracks, burrs, peeling and other obvious defects.
5. Oxidation degree: The thickness of the oxide film should reach 10 microns. When you purchase, you can scratch the surface of the profile to see if the oxide film on the surface can be wiped off.
Fourth, the components of aluminum alloy doors and windows are firmly connected
In terms of components, the joints of aluminum alloy doors and windows should be firm, and the door and window are more advantageous in this respect.
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